Kirk and the Enterprise Computer become detectives after Scotty is accused of murdering women on a pleasure planet.



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Episode complete credited cast:
Charles Macaulay ...
Jaris (as Charles Macauley)
Pilar Seurat ...
Charles Dierkop ...
Joseph Bernard ...
Tanya Lemani ...
Kara (as Tania Lemani)
John Winston ...
Transporter Chief
Virginia Aldridge ...
Karen Tracy
Yeoman Tankris (as Judy McConnell)
Judi Sherven ...


While on shore leave on the planet Argelius II with Dr. McCoy and Captain Kirk, Chief Engineer Scott finds himself accused of murdering an exotic dancer he met in a nightclub. He has no recollection of the incident but is found standing over the girl with a bloody knife in his hand. For Mr. Hengist, the chief administrator, the case is cut and dried, but Jaris, the planet's leader, suggests that his wife chair a séance to identify the killer. Tragedy strikes again, still pointing to Mr. Scott as the culprit. Kirk suggests they retire to the Enterprise where they can use its computers to determine if Scott is lying and who the real culprit may be. Written by garykmcd

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Release Date:

22 December 1967 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


For most of Star Trek, James Doohan ("Scotty") hides his right hand, which was missing the middle finger due to a WWII D-Day injury. While being questioned with his hand resting on some sort of lie detector scanner, his fingers are hidden by being curled around the edge of the plate. During a close-up shot of the machine reacting to an intentional lie being told, a complete five-fingered hand spread across the plate is seen - the hand is an obvious stunt double. See more »


Obvious double for Mr. Hengist in the final chase. Notice the stunt double is wearing a complete bald cap whereas actor John Fiedler has hair on the back and sides. See more »


Hengist: Fairy tales. Ghosts and goblins.
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User Reviews

The Eternal Ripper
4 January 2014 | by (Buffalo, New York) – See all my reviews

One of my absolute favorite Star Trek prime episodes is this one where John Fiedler gives a wonderful guest star performance as a Star Fleet official at a peaceful planet where pacifism has been the rule for centuries. Small wonder that aggressive cultures like the Klingons or the Romulans haven't taken over.

But was has taken over is a homicidal maniac who really enjoys his work in the manner of Jack the Ripper when he was doing in all those prostitutes in the Whitechapel neighborhood in London. This Star Trek episode isn't real clear on exactly who or what is doing the killing. But in terms of creating an atmosphere of terror of the unknown it can't be beat.

Our Star Fleet legal system comes into play with modern computer devices that have rendered perjury non-existent. In fact William Shatner in another atmosphere was undergoing a court martial and the same lie detector hooked up to the Enterprise computer was used there. Here it Lt. Commander Scott who is thought to be the killer of two women, one of them a member of the Enterprise crew while on shore leave. He's telling the truth, but the truth can be subjective.

In the end the Ripper is discovered to be an entity of sorts and while they don't know what it is, DeForest Kelley and William Shatner and Leonard Nimoy sure find a good method of getting rid of it.

One of the best Star Trek episodes, a must for Trekkies.

2 of 3 people found this review helpful.  Was this review helpful to you?

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